103201321 has 4 divisors (see below), whose sum is σ = 103474000. Its totient is φ = 102928644.

The previous prime is 103201297. The next prime is 103201337. The reversal of 103201321 is 123102301.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 123102301 = 7 ⋅17586043.

It is a cyclic number.

It is not a de Polignac number, because 103201321 - 2⁵ = 103201289 is a prime.

It is a super-2 number, since 2×103201321² = 21301025312290082, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (103201361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 135771 + ... + 136528.

It is an arithmetic number, because the mean of its divisors is an integer number (25868500).

Almost surely, 2^103201321 is an apocalyptic number.

It is an amenable number.

103201321 is a deficient number, since it is larger than the sum of its proper divisors (272679).

103201321 is an equidigital number, since it uses as much as digits as its factorization.

103201321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272678.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 103201321 is about 10158.8050970574. The cubic root of 103201321 is about 469.0600211416.

Adding to 103201321 its reverse (123102301), we get a palindrome (226303622).

The spelling of 103201321 in words is "one hundred three million, two hundred one thousand, three hundred twenty-one".